On the Impact of Misalignment Fading in Transdermal Optical Wireless Communications

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Abstract

In this paper, we study the performance of the transdermal optical wireless communications (OWCs). In order to provide a quantified understanding of the link’s parameters, we establish an appropriate theoretical framework that takes into account the channel particularities, the integration area of the internal unit, the transmitter-receiver misalignment, and the characteristics of the optical units. In more detail, we present closed-form expressions for the instantaneous and average signal to noise ratio (SNR) of the OWCs transdermal link. The findings reveal that misalignment fading drastically affects the reliability and effectiveness of the transdermal link.